TBH, I've just installed a Dark Motor (Superior version, not Supreme which can have "problems" - see separate post !), when compared with a much older 24V (actually, later on 36V-supplied but with a resistor bank to reduce the voltage applied to the motor) motor, then the USALS motor is SLOW.
If I were you, and you can do/afford it (there's a lot more cabling involved), then I would use something like a Superjack Diseqc-to-36V V-Box adapter and an old fashioned 36V H-2-H motor because they seem to be a LOT faster to move. (I still have that alternative, and might well "revert" to it in the near future!)